ALTA, UTAH

Period of Record General Climate Summary - Growing Degree Days

Station:(420072) ALTA
From Year=1948 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	0	1	4	30	153	378	631	597	331	116	13	1	2255
40 S	0	1	5	36	189	567	1197	1794	2125	2241	2254	2255	2255
45 M	0	0	1	8	70	249	476	442	205	49	2	0	1501
45 S	0	0	1	9	78	328	804	1246	1450	1499	1501	1501	1501
50 M	0	0	0	1	22	138	324	290	100	14	0	0	888
50 S	0	0	0	1	23	160	485	775	875	888	888	888	888
55 M	0	0	0	0	4	55	181	148	33	1	0	0	422
55 S	0	0	0	0	4	59	240	388	422	422	422	422	422
60 M	0	0	0	0	0	13	66	44	5	0	0	0	128
60 S	0	0	0	0	0	13	79	123	128	128	128	128	128

Corn Growing Degree Days
50 M	1	1	2	16	84	211	360	332	180	63	7	1	1258
50 S	1	2	4	20	104	315	675	1006	1186	1250	1257	1258	1258

M = Monthly Data
S - Running sum of monthly data.
Growing Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
Table updated on Jul 28, 2006
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu